Allow custom types created using @GraphQLType annotation be part of Lists

[srinikethr]

Is your feature request related to a problem? Please describe.
The @GraphQLType annotation currently helps add a custom type by providing a typename and defining the type in the config when generating the schema. This works well when the custom type is used as the return type of a function/field. We're unable to use the custom type as part of a list return type at the moment.

what works:

data class SomeClass(
    @GraphQLType("CustomProperty")
    val property: Any
)

what doesn't:

data class SomeClass(
    @GraphQLType("CustomProperty")
    val property: List<Any>
)

While generating GraphQL types, the code checks for the @GraphQLType annotation and returns.

private fun getGraphQLType(
    generator: SchemaGenerator,
    kClass: KClass<*>,
    type: KType,
    typeInfo: GraphQLKTypeMetadata
): GraphQLType {
    val customTypeAnnotation = typeInfo.fieldAnnotations.getCustomTypeAnnotation()
    if (customTypeAnnotation != null) {
        return GraphQLTypeReference.typeRef(customTypeAnnotation.typeName)
    }

    return when {
        kClass.isEnum() -> @Suppress("UNCHECKED_CAST") (generateEnum(generator, kClass as KClass<Enum<*>>))
        kClass.isListType() -> generateList(generator, type, typeInfo)
        kClass.isUnion(typeInfo.fieldAnnotations) -> generateUnion(generator, kClass, typeInfo.fieldAnnotations.getUnionAnnotation())
        kClass.isInterface() -> generateInterface(generator, kClass)
        typeInfo.inputType -> generateInputObject(generator, kClass)
        else -> generateObject(generator, kClass)
    }
}

Describe the solution you'd like
The check for the custom type generation could perhaps be moved after the check for the list type generation (just like unions) thereby solving for the list of custom types use case.